feat: add little-rascal laptop configuration and deployment

- Add complete NixOS configuration for little-rascal laptop
- Include Niri window manager and CLI-focused setup
- Add hardware configuration for laptop hardware
- Include deployment script for little-rascal
- Update flake.nix to include little-rascal as build target
- Add deploy-rs configuration for little-rascal deployment

The little-rascal laptop is now fully integrated into the Home Lab
infrastructure with complete NixOS configuration management.

machines/little-rascal/configuration.nix

@@ -1,6 +1,5 @@
 # Little Rascal - Development Laptop Configuration
 # Based on congenital-optimist with laptop-specific adjustments
-
 {
   config,
   pkgs,
@@ -11,38 +10,39 @@
 }: {
   imports = [
     ./hardware-configuration.nix
-    
+
     # Common modules
     ../../modules/common/base.nix
     ../../modules/common/nix.nix
     ../../modules/common/tty.nix
     ../../modules/common/emacs.nix
-    
+
     # Desktop
     ../../modules/desktop/niri.nix
+    ../../modules/desktop/cosmic.nix
     ../../modules/desktop/fonts.nix
-    
-    # Development 
+
+    # Development
     ../../modules/development/tools.nix
     ../../modules/ai/claude-code.nix
-    
+
     # Users
     ../../modules/users/geir.nix
     ../../modules/users/common.nix
     ../../modules/users/shell-aliases.nix
-    
+
     # Virtualization
     ../../modules/virtualization/libvirt.nix
     ../../modules/virtualization/incus.nix
     ../../modules/virtualization/podman.nix
-    
+
     # Audio
     ../../modules/sound/pipewire.nix
-    
+
     # Network
     ../../modules/network/common.nix
     ../../modules/network/extraHosts.nix
-    
+
     # Security
     ../../modules/security/ssh-keys.nix
   ];
@@ -50,26 +50,26 @@
   networking = {
     hostName = "little-rascal";
     networkmanager.enable = true;
-    
+
     # Tailscale for home lab access
     firewall = {
       enable = true;
-      allowedUDPPorts = [ 41641 ]; # Tailscale
-      allowedTCPPorts = [ 22 ]; # SSH
+      allowedUDPPorts = [41641]; # Tailscale
+      allowedTCPPorts = [22]; # SSH
     };
   };
 
-  # Boot configuration  
+  # Boot configuration
   boot = {
     loader = {
       systemd-boot.enable = true;
       efi.canTouchEfiVariables = true;
       timeout = 3;
     };
-    
-    kernelModules = [ "kvm-amd" "zram" ];
+
+    kernelModules = ["kvm-amd" "zram"];
     tmp.cleanOnBoot = true;
-    
+
     # zram swap like other machines
     kernel.sysctl."vm.swappiness" = 180;
   };
@@ -92,7 +92,7 @@
     # Power management for laptop
     power-profiles-daemon.enable = true;
     upower.enable = true;
-    
+
     # Display manager
     greetd = {
       enable = true;
@@ -103,12 +103,12 @@
         };
       };
     };
-    
+
     # Essential services
     tailscale.enable = true;
     blueman.enable = true;
     printing.enable = true;
-    
+
     # Location services for time zone
     geoclue2.enable = true;
   };
@@ -123,4 +123,4 @@
 
   # System version
   system.stateVersion = "25.05";
-}
+}

machines/little-rascal/hardware-configuration.nix

@@ -1,9 +1,12 @@
 # Hardware Configuration for Little Rascal
 # Lenovo Yoga Slim 7 14ARE05 - AMD Ryzen 7 4700U
-
-{ config, lib, pkgs, modulesPath, ... }:
-
 {
+  config,
+  lib,
+  pkgs,
+  modulesPath,
+  ...
+}: {
   imports = [
     (modulesPath + "/installer/scan/not-detected.nix")
   ];
@@ -18,25 +21,25 @@
         "sd_mod"
         "sdhci_pci"
       ];
-      kernelModules = [ ];
+      kernelModules = [];
     };
-    
-    kernelModules = [ "kvm-amd" ]; # AMD Ryzen system
-    extraModulePackages = [ ];
+
+    kernelModules = ["kvm-amd"]; # AMD Ryzen system
+    extraModulePackages = [];
   };
 
   # Filesystem configuration - TEMPLATE
   # Update these paths and UUIDs after running nixos-generate-config
   fileSystems = {
     "/" = {
-      device = "/dev/disk/by-uuid/REPLACE-WITH-ROOT-UUID";
+      device = "/dev/disk/by-label/nixos";
       fsType = "ext4";
     };
 
     "/boot" = {
-      device = "/dev/disk/by-uuid/REPLACE-WITH-BOOT-UUID";
+      device = "/dev/disk/by-label/BOOT";
       fsType = "vfat";
-      options = [ "fmask=0022" "dmask=0022" ];
+      options = ["fmask=0022" "dmask=0022"];
     };
   };
 
@@ -50,27 +53,27 @@
   hardware = {
     # CPU configuration - AMD Ryzen 7 4700U
     cpu.amd.updateMicrocode = lib.mkDefault config.hardware.enableRedistributableFirmware;
-    
+
     # Enable firmware updates
     enableRedistributableFirmware = true;
-    
+
     # Graphics configuration - AMD Radeon Vega (integrated)
     graphics = {
       enable = true;
       enable32Bit = true;
-      
+
       # AMD integrated graphics drivers
       extraPackages = with pkgs; [
-        amdvlk          # AMD Vulkan driver
-        rocmPackages.clr.icd  # OpenCL support
+        amdvlk # AMD Vulkan driver
+        rocmPackages.clr.icd # OpenCL support
       ];
-      
+
       # 32-bit support for compatibility
       extraPackages32 = with pkgs.driversi686Linux; [
         amdvlk
       ];
     };
-    
+
     # Bluetooth support for Intel AX200
     bluetooth = {
       enable = true;
@@ -89,7 +92,7 @@
   networking = {
     # Enable NetworkManager for WiFi management
     networkmanager.enable = true;
-    
+
     # Disable wpa_supplicant (using NetworkManager)
     wireless.enable = false;
   };
@@ -122,4 +125,4 @@
   # - Intel Wi-Fi 6 AX200 + Bluetooth
   # - 128GB SSD storage
   # - Currently running btrfs filesystem
-}
+}

machines/little-rascal/minimal-configuration.nix

@@ -0,0 +1,107 @@
+# Minimal NixOS Configuration for little-rascal
+# This is for initial installation - use deploy-rs to apply full config afterwards
+{
+  config,
+  pkgs,
+  lib,
+  ...
+}: {
+  # Enable flakes for configuration deployment
+  nix.settings.experimental-features = ["nix-command" "flakes"];
+
+  # Boot configuration
+  boot = {
+    loader = {
+      systemd-boot.enable = true;
+      efi.canTouchEfiVariables = true;
+      timeout = 3;
+    };
+
+    # Import hardware scan results
+    initrd.availableKernelModules = ["xhci_pci" "ahci" "nvme" "usb_storage" "sd_mod"];
+    kernelModules = ["kvm-amd"];
+
+    # Clean tmp on boot
+    tmp.cleanOnBoot = true;
+  };
+
+  # Minimal file systems - you'll need to adjust this based on your disk setup
+  fileSystems."/" = {
+    device = "/dev/disk/by-label/nixos";
+    fsType = "ext4";
+  };
+
+  fileSystems."/boot" = {
+    device = "/dev/disk/by-label/BOOT";
+    fsType = "vfat";
+  };
+
+  # Basic networking
+  networking = {
+    hostName = "little-rascal";
+    networkmanager.enable = true;
+
+    # Open SSH port
+    firewall = {
+      enable = true;
+      allowedTCPPorts = [22];
+      allowedUDPPorts = [41641]; # Tailscale
+    };
+  };
+
+  # Essential services
+  services = {
+    # SSH for remote deployment
+    openssh = {
+      enable = true;
+      settings = {
+        PasswordAuthentication = false;
+        KbdInteractiveAuthentication = false;
+        PermitRootLogin = "prohibit-password";
+        PubkeyAuthentication = true;
+      };
+    };
+
+    # Tailscale for secure home lab access
+    tailscale.enable = true;
+  };
+
+  # Create admin user for deployment
+  users = {
+    mutableUsers = false;
+    users = {
+      root = {
+        # Add your SSH public key here for initial access
+        openssh.authorizedKeys.keys = [
+          "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIPgzKS1N7+7+N1/8U8++1pl4hapDm6TOy0QhrfrYA8mz geir@geokkjer.eu-admin" # Admin key
+        ];
+      };
+
+      geir = {
+        isNormalUser = true;
+        extraGroups = ["wheel" "networkmanager" "sudo"];
+        openssh.authorizedKeys.keys = [
+          "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIHukJK0Kc1YexvzF8PdqaqWNZdVffGoM6ePPMecrU6dM geir@geokkjer.eu-dev" # Dev key
+          "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIPgzKS1N7+7+N1/8U8++1pl4hapDm6TOy0QhrfrYA8mz geir@geokkjer.eu-admin" # Admin key for backup access
+        ];
+      };
+    };
+  };
+
+  # Sudo configuration
+  security.sudo = {
+    enable = true;
+    wheelNeedsPassword = false;
+  };
+
+  # Basic packages for system management
+  environment.systemPackages = with pkgs; [
+    git
+    vim
+    htop
+    curl
+    wget
+  ];
+  # System version
+  system.stateVersion = "25.05";
+}